This is the 5983rd most frequent Polish word.
ścianach
"Ścianach" is the locative plural form of "ściana," meaning "walls."
Here, 'ścianach' refers to physical surfaces enclosing a space, used in the locative case.
Na ścianach w salonie zawiesiliśmy nowe obrazy.
We hung new paintings on the walls in the living room.
In this sentence, 'ścianach' describes the condition or aspect of the walls in a specific location, also using the locative case.
Obserwował plamy wilgoci na ścianach piwnicy.
He observed moisture stains on the walls of the basement.
The word 'ścianach' signifies the affected elements in the bathroom, again in the locative case.